body {
    padding: 50px 0;
    background-color: rgb(13, 17, 23);
    color: #fff;
    font-family: 钉钉进步体;
    white-space: normal;
    /* overflow-x: hidden; */
}

.empty {
    display: none;
}

h1 span {
    background-color: red;
}

h1.step {
    margin: 30px 0;
    background-image: linear-gradient(to right, white, rgb(13, 17, 23));
    color: rgb(0, 0, 0);
}

.red {
    color: red;
}

.small {
    word-break: break-all;
}

.notebook {
    padding: 20px 10px;
    width: 300px;
    margin: auto;
    background-color: #fff;
    color: black;
    font-family: consola;
    line-height: 25px;
    border-radius: 10px;
}

.cmd {
    padding: 20px 10px;
    width: 320px;
    margin: auto;
    background-color: black;
    color: #fff;
    font-family: consola;
    line-height: 25px;
    border: 1px solid #7d7d7d;
    border-radius: 10px;
    word-break: break-all;
}

.imgBox {
    display: flex;
    flex-direction: column;
}

.imgBox img {
    margin: auto;
    padding: 10px 20px;
    width: 300px;
    flex: 1;
}

p {
    text-indent: 2em;
}

a {
    font-family: 黑体;
    text-decoration: none;
    color: rgb(35, 134, 54);
}

a:hover {
    color: rgb(183, 255, 198);
}

.underline {
    border-bottom: red 3px dashed;
}